FAQ SpeedBox1 SpeedBox2

What does tuning an electric bike actually do?

You have surely already noticed that when riding on an electric bike above 25 km / h, the motor of your electric bike automatically shuts off due to the speed limit. If you wish to remove the speed limit of the electric bike, there is nothing easier than installing a tuning part that removes this speed limit. You can achieve higher speeds, and everything is limited only by the pedalling rate. In our experience, it is possible to ride at a speed of up to 40 km/h, 50 km/h and even above 60 km/h with SpeedBox tuning, and that is already a proper speed!

How does the electric bike tuning work?

For all types of electric bike with central drives, a speed ​​limit on speeds above 25 km/h is set during production. Your motor will turn off at this speed. By installing the SpeedBox, you can remove this unpleasant speed ​​limit. You will thus increase the speed of your electric bike above a given limit, and your speed will depend only on the pedalling speed.

Would I manage to install the tuning part by myself?

You definitely don't have to worry about the installation of the tuning chip to into your electric bike. It is a very easy procedure that can be managed by a complete beginner with a basic set of tools. You simply have to remove the cover of the electric bike and attach several connectors. It is the use of the original connectors that makes the SpeedBox unique and suitable for installation at home. Do you need to see how the SpeedBox is installed? Play our instructional videos.

Can the tuning part be removed and installed again later if necessary?

The tuning part is installed in the electric bike by simply plugging in several connectors. The installing and removing the tuning part is very easy thanks to the original connectors, and only non-destructive changes occur during installation.

What is the difference between Speed​​Box1 and Speed​​Box2?

SpeedBox1 is the first version of the tuning chip for increasing the speed of electric bikes. When it is used, half the values of the real speed are displayed on your display. For example, if you ride at a speed of 40 km/h, your display will show 20 km/h. The motor switches off when you reach a speed of 50 km/h.  The new SpeedBox2 line builds on its predecessor with its technology and design quality, but it has several significant improvements. The SpeedBox2 electric bike tuning part does not have a speed limit, and all the display values ​​are displayed correctly. The resultant speed ​​of an electric bike with SpeedBox2 installed thus depends only on the pedalling rate. Thanks to this, speeds of ​​40 km/h, 50 km/h and above 60 km/h can be achieved.

What is the delivery time for a SpeedBox ordered from the e-shop?

Delivery speed is our priority. We ship the goods by the next day after the order placed. The speed of delivery depends largely on the shipping company you select. You can choose from three options: Czech Post, DPD and DHL.

Estimated delivery time:
DPD: 2 to 6 business days
DHL: maximum 3 days
Czech Post (Standard Shipping): 1 to 4 weeks

Why can't I track my shipment?

After your shipment has been sent, you will receive a link to its tracking. If the destination address is outside the Czech Republic, a new number is assigned to the shipment at the border and it can no longer be tracked after crossing the national border.  If you have chosen the "Standard Shipping" method for your shipment, wait at least 4 weeks before claiming the shipment. If you do not receive your package by then, do not hesitate to contact our technical support, which is fully available to you at info@derestricted-ebike.com.

How to choose a tuning part for a Bosch electric bike?

Only one version of SpeedBox2 which works for all motor models is available for all electric bikes with a Bosch engine produced after 2014.
Do you still have any doubts regarding the right tuning part? Have a look at your electric bike, and select an image of the corresponding motor at this web page. You will be automatically redirected to the SpeedBox suitable for your electric bike.

How to choose a tuning part for a Yamaha electric bike?

Are you are not sure about which tuning part to choose for an electric bike with a Yamaha motor?  Use the shopping guide on our website. Simply select the display model, and you will be automatically redirected to the SpeedBox that is best suited to your electric bike.

How to choose a tuning part for an electric bike with a Giant motor?

Do you need help selecting a SpeedBox for an electric bike with a Giant engine? Have a look at the motor of your electric bike and at the control panel located on the left handlebar. Then go to this web page, where you can simply select one of the images so that both the panel and the motor match the components of your electric bike.  The most suitable SpeedBox for your Giant will be displayed automatically.

Can I use a SpeedBox for an electric bike that measures speeds in miles per hour (mph)?

Of course you can. When using a SpeedBox to increase the speed ​​of your electric bike, it does not matter whether you measure the speed in km/h or in mph.

Can I use a SpeedBox with a Bosch SpeedLine, which is limited to 45 km/h?

No, we do not produce tuning parts for this type of electric bike. Our development focuses more on electric bikes with a strict limit of 25 km/h.

Does the SB work with a dual battery bike (an electric bike with two batteries)?

No, we do not yet producing a SpeedBox for this type electric bike.

How fast can I go with my electric bike? Is the SpeedBox limited by a speed of 50 km/h or 99 km/h?

When tuning an electric bike with SpeedBox1, you can reach speeds of up to 50 km / h. Tuning electric bikes with a central drive, SpeedBox2 removes the speed limit of 25 km / h so that the electric bike is not limited by any speed ceiling. When you use it, you are limited only by your own pedalling speed. In our experience, it is possible to ride at a speed of up to 40 km / h, 50 km / h and even above 60 km / hwith SpeedBox2 tuning.

After installing the SpeedBox, the speed on the display jumps to 75 km/h when reaching a speed of 25 km/h.

It is probably due to the connectors being connected improperly. In the installation videos, no lights are installed on the bikes, which can be confusing for some users. Disconnect the SpeedBox, and use the speed sensor cable and communication cable when installing it again.


After installing SpeedBox2 for GIANT EVO, the whole system turns off after a few seconds, what should I do?

A mistake was probably made during the installation of your SpeedBox. Check whether you have accidentally plugged the SpeedBox into the red connector.  If you have, you must disconnect the red connector from the SpeedBox, and you must connect the connector on the cable from the speed sensor, which is fed from the rear wheel, into this SpeedBox connector. The red connector must remain unconnected. If you are not sure about the correct installation procedure, please play the instruction video.

In case of any other questions, feel free to contact us.


Design of products

Design of products

Although appearance is not very important for SpeedBox, we want it to excel among others and be among the designer pieces. Components made of high-quality material gives SpeedBox not only mechanical strength, durability and water resistance, but also an attractive appearance.

Top quality

Top quality

We use only electronic components of world's leading producers, during the production of SpeedBox. The processor is certified for the automotive industry, and the SpeedBox is tested several times during and after production to make sure you receive a reliable product.

Easy installation

Easy installation

We use the original keyed connectors to connect the SpeedBox to the electric bike, which are colour coded so you know exactly where to connect the connector. We've put together detailed instructions and videos which could help you easily install the SpeedBox by yourself.